Which Components Are Mainly Upgraded in Escalator Electrical Modernization?
As escalators age, their electrical components can become worn out, slow to respond, or even pose safety risks. Therefore, Escalator Electrical Modernization is a key process to improve equipment safety, energy efficiency, and operational stability. So, which electrical components are typically upgraded during modernization? Below are the main upgrade areas:
1. Control System（Escalator Control Cabinet）
Old relay systems or early PLC controllers respond slowly and have a high failure rate. It is recommended to upgrade to an intelligent control system with:
VVVF (variable frequency) control support
Precise operating logic
Fault self-diagnosis
Energy-saving operation modes
Recommended upgrade: A-FLY Intelligent Control Cabinet, compatible with multiple escalator brands.
2. Inverter (Escalator Inverter)
This is the core component of energy-saving upgrades. It controls motor speed to improve ride smoothness and reduce energy consumption by 30%–45%:
Supports automatic start-stop mode
Enables energy-saving standby
Reduces mechanical impact and maintenance cost
A-FLY energy-saving inverters are widely used in old escalator modernization projects.
3. Escalator Safety Circuit and Safety Switches
The safety circuit is the life protection system of an escalator. It must be upgraded or replaced during modernization:
Comb plate safety switch
Handrail inlet protection switch
Skirt panel anti-clamp switch
Emergency stop switch
Upgrading the safety circuit helps prevent accidents such as entrapment and reverse running.
4. Escalator Sensors and Encoders
These components monitor escalator operation in real time:
Speed sensors
Position sensors
Direction detection devices
They improve control accuracy and emergency response speed.
After long operation, contact points may burn or age and require replacement:
Main circuit contactors
Thermal relays
Intermediate relays
These ensure a stable and reliable power circuit.
Aging cables can cause leakage risks and must be renewed:
Main power cables
Grounding system
Power switches and protection devices
This enhances overall electrical safety.
7. Display and HMI (Human-Machine Interface)
Optional upgrades include:
Fault display modules
Operation panels (HOP)
Operation status monitoring systems
These allow technicians to monitor operation and alarm data more easily.
Summary
The core goal of escalator electrical modernization is to make old escalators safer, more energy-efficient, and smarter. Common upgrades include the control system, inverter, safety circuit, sensors, contactors and relays, power cables, and display systems. Choosing a professional escalator electrical parts supplier like A-FLY ensures compatibility, easy installation, and safe operation.
If you need an escalator electrical upgrade solution, feel free to contact A-FLY for technical support and a complete parts list.
